Buying 100 Shares Of A Stock Site
When you buy 100 shares, your order is treated with higher priority on the exchange.
Some companies offer "hidden" rewards specifically to those who own a round lot of 100 shares: buying 100 shares of a stock
You "rent out" your 100 shares to another trader. They pay you a fee (a premium) for the right to buy your shares at a higher price later. When you buy 100 shares, your order is